PMI
PMI
(OP)
We have a joint consisting of dissimilar materials being welded together.The material's are SA335 P91 to SA335 P22.The joint is welded with E 9015 B9 electrode
What would be the chemical requirments criteria be for PMI on this joint?
Thanks
QC12
What would be the chemical requirments criteria be for PMI on this joint?
Thanks
QC12





RE: PMI
RE: PMI
With half of the joint being P22 I wonder if there will be dilution that will lower the values?
RE: PMI
Then you run into the fact that the dilution levels at the surface of a cap pass are often significantly lower than they are at the root or sidewall areas... add in two different base metals, and it's an even bigger bag of worms.
Can you give us some detail as to why you're running PMI on a weld deposit? Are you trying to verify whether the correct filler material was run on a joint, or is there some other reason?
RE: PMI
Nigel Armstrong
Lloyds Register
Independent Verification Body Surveyor
RE: PMI
I checked the PQR and no PMI was performed at that time.
RE: PMI
RE: PMI
Steve Jones
Materials & Corrosion Engineer
http://www.linkedin.com/pub/8/83b/b04
RE: PMI
As a client requirement, the client's PMI procedure (or other document formalising the requirement) should state acceptable chemistry limits for this WPS. If not, then submit a technical query requesting such limits be provided.
Nigel Armstrong
Lloyds Register
Independent Verification Body Surveyor